Gap.expand constructor
Creates a widget that takes a fixed mainAxisExtent
of space in the
direction of its parent and expands in the cross axis direction.
The mainAxisExtent
must not be null and must be positive.
Implementation
const Gap.expand(
double mainAxisExtent, {
Key? key,
Color? color,
}) : this(
mainAxisExtent,
key: key,
crossAxisExtent: double.infinity,
color: color,
);